pub trait Copy: Clone { }
Expand description
Types whose values can be duplicated simply by copying bits.
By default, variable bindings have ‘move semantics.’ In other words:
#[derive(Debug)]
struct Foo;
let x = Foo;
let y = x;
// `x` has moved into `y`, and so cannot be used
// println!("{x:?}"); // error: use of moved value
However, if a type implements Copy
, it instead has ‘copy semantics’:
// We can derive a `Copy` implementation. `Clone` is also required, as it's
// a supertrait of `Copy`.
#[derive(Debug, Copy, Clone)]
struct Foo;
let x = Foo;
let y = x;
// `y` is a copy of `x`
println!("{x:?}"); // A-OK!
It’s important to note that in these two examples, the only difference is whether you
are allowed to access x
after the assignment. Under the hood, both a copy and a move
can result in bits being copied in memory, although this is sometimes optimized away.
§How can I implement Copy
?
There are two ways to implement Copy
on your type. The simplest is to use derive
:
#[derive(Copy, Clone)]
struct MyStruct;
You can also implement Copy
and Clone
manually:
struct MyStruct;
impl Copy for MyStruct { }
impl Clone for MyStruct {
fn clone(&self) -> MyStruct {
*self
}
}
There is a small difference between the two. The derive
strategy will also place a Copy
bound on type parameters:
#[derive(Clone)]
struct MyStruct<T>(T);
impl<T: Copy> Copy for MyStruct<T> { }
This isn’t always desired. For example, shared references (&T
) can be copied regardless of
whether T
is Copy
. Likewise, a generic struct containing markers such as PhantomData
could potentially be duplicated with a bit-wise copy.
§What’s the difference between Copy
and Clone
?
Copies happen implicitly, for example as part of an assignment y = x
. The behavior of
Copy
is not overloadable; it is always a simple bit-wise copy.
Cloning is an explicit action, x.clone()
. The implementation of Clone
can
provide any type-specific behavior necessary to duplicate values safely. For example,
the implementation of Clone
for String
needs to copy the pointed-to string
buffer in the heap. A simple bitwise copy of String
values would merely copy the
pointer, leading to a double free down the line. For this reason, String
is Clone
but not Copy
.
Clone
is a supertrait of Copy
, so everything which is Copy
must also implement
Clone
. If a type is Copy
then its Clone
implementation only needs to return *self
(see the example above).
§When can my type be Copy
?
A type can implement Copy
if all of its components implement Copy
. For example, this
struct can be Copy
:
#[derive(Copy, Clone)]
struct Point {
x: i32,
y: i32,
}
A struct can be Copy
, and i32
is Copy
, therefore Point
is eligible to be Copy
.
By contrast, consider
struct PointList {
points: Vec<Point>,
}
The struct PointList
cannot implement Copy
, because Vec<T>
is not Copy
. If we
attempt to derive a Copy
implementation, we’ll get an error:
the trait `Copy` cannot be implemented for this type; field `points` does not implement `Copy`
Shared references (&T
) are also Copy
, so a type can be Copy
, even when it holds
shared references of types T
that are not Copy
. Consider the following struct,
which can implement Copy
, because it only holds a shared reference to our non-Copy
type PointList
from above:
#[derive(Copy, Clone)]
struct PointListWrapper<'a> {
point_list_ref: &'a PointList,
}
§When can’t my type be Copy
?
Some types can’t be copied safely. For example, copying &mut T
would create an aliased
mutable reference. Copying String
would duplicate responsibility for managing the
String
’s buffer, leading to a double free.
Generalizing the latter case, any type implementing Drop
can’t be Copy
, because it’s
managing some resource besides its own size_of::<T>
bytes.
If you try to implement Copy
on a struct or enum containing non-Copy
data, you will get
the error E0204.
§When should my type be Copy
?
Generally speaking, if your type can implement Copy
, it should. Keep in mind, though,
that implementing Copy
is part of the public API of your type. If the type might become
non-Copy
in the future, it could be prudent to omit the Copy
implementation now, to
avoid a breaking API change.
§Additional implementors
In addition to the implementors listed below,
the following types also implement Copy
:
- Function item types (i.e., the distinct types defined for each function)
- Function pointer types (e.g.,
fn() -> i32
) - Closure types, if they capture no value from the environment
or if all such captured values implement
Copy
themselves. Note that variables captured by shared reference always implementCopy
(even if the referent doesn’t), while variables captured by mutable reference never implementCopy
.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.
Implementors§
impl Copy for ComponentItem
impl Copy for FixedEncoding
impl Copy for FlatType
impl Copy for InterfaceType
impl Copy for StringEncoding
impl Copy for Transcode
impl Copy for TypeDef
impl Copy for Collector
impl Copy for ConstOp
impl Copy for EngineOrModuleTypeIndex
impl Copy for EntityIndex
impl Copy for IndexType
impl Copy for wasmtime_environ::RelocationTarget
impl Copy for SettingKind
impl Copy for Trap
impl Copy for VMGcKind
impl Copy for WasmHeapBottomType
impl Copy for WasmHeapTopType
impl Copy for WasmHeapType
impl Copy for WasmStorageType
impl Copy for WasmValType
impl Copy for LibCall
impl Copy for AsciiChar
impl Copy for wasmtime_environ::__core::cmp::Ordering
impl Copy for Infallible
impl Copy for wasmtime_environ::__core::fmt::Alignment
impl Copy for IpAddr
impl Copy for Ipv6MulticastScope
impl Copy for SocketAddr
impl Copy for FpCategory
impl Copy for SearchStep
impl Copy for wasmtime_environ::__core::sync::atomic::Ordering
impl Copy for std::io::SeekFrom
impl Copy for std::io::error::ErrorKind
impl Copy for Shutdown
impl Copy for BacktraceStyle
impl Copy for RecvTimeoutError
impl Copy for TryRecvError
impl Copy for _Unwind_Action
impl Copy for _Unwind_Reason_Code
impl Copy for Level
impl Copy for LevelFilter
impl Copy for Op
impl Copy for bool
impl Copy for char
impl Copy for f16
impl Copy for f32
impl Copy for f64
impl Copy for f128
impl Copy for i8
impl Copy for i16
impl Copy for i32
impl Copy for i64
impl Copy for i128
impl Copy for isize
impl Copy for !
impl Copy for u8
impl Copy for u16
impl Copy for u32
impl Copy for u64
impl Copy for u128
impl Copy for usize
impl Copy for AdapterId
impl Copy for AdapterModuleId
impl Copy for InstanceId
impl Copy for MemoryId
impl Copy for PostReturnId
impl Copy for ReallocId
impl Copy for ComponentFuncIndex
impl Copy for ComponentIndex
impl Copy for ComponentInstanceIndex
impl Copy for ComponentTypeIndex
impl Copy for ComponentUpvarIndex
impl Copy for DefinedResourceIndex
impl Copy for ExportIndex
impl Copy for ImportIndex
impl Copy for LoweredIndex
impl Copy for ModuleIndex
impl Copy for ModuleInstanceIndex
impl Copy for ModuleUpvarIndex
impl Copy for ResourceIndex
impl Copy for RuntimeComponentInstanceIndex
impl Copy for RuntimeImportIndex
impl Copy for RuntimeInstanceIndex
impl Copy for RuntimeMemoryIndex
impl Copy for RuntimePostReturnIndex
impl Copy for RuntimeReallocIndex
impl Copy for StaticComponentIndex
impl Copy for TrampolineIndex
impl Copy for TypeComponentIndex
impl Copy for TypeComponentInstanceIndex
impl Copy for TypeEnumIndex
impl Copy for TypeFlagsIndex
impl Copy for TypeFuncIndex
impl Copy for TypeListIndex
impl Copy for TypeModuleIndex
impl Copy for TypeOptionIndex
impl Copy for TypeRecordIndex
impl Copy for TypeResourceTableIndex
impl Copy for TypeResultIndex
impl Copy for TypeTupleIndex
impl Copy for TypeVariantIndex
impl Copy for BuiltinFunctionIndex
impl Copy for DataIndex
impl Copy for DefinedFuncIndex
impl Copy for DefinedGlobalIndex
impl Copy for DefinedMemoryIndex
impl Copy for DefinedTableIndex
impl Copy for ElemIndex
impl Copy for EngineInternedRecGroupIndex
impl Copy for FilePos
impl Copy for FuncIndex
impl Copy for FuncRefIndex
impl Copy for FunctionLoc
impl Copy for wasmtime_environ::Global
impl Copy for GlobalIndex
impl Copy for HostPtr
impl Copy for Limits
impl Copy for Memory
impl Copy for MemoryIndex
impl Copy for ModuleInternedRecGroupIndex
impl Copy for ModuleInternedTypeIndex
impl Copy for OwnedMemoryIndex
impl Copy for RecGroupRelativeTypeIndex
impl Copy for Setting
impl Copy for SizeOverflow
impl Copy for StaticModuleIndex
impl Copy for Table
impl Copy for TableIndex
impl Copy for Tag
impl Copy for TagIndex
impl Copy for TypeIndex
impl Copy for WasmRefType
impl Copy for AllocError
impl Copy for Layout
impl Copy for TypeId
impl Copy for CpuidResult
impl Copy for __m128
impl Copy for __m128bh
impl Copy for __m128d
impl Copy for __m128h
impl Copy for __m128i
impl Copy for __m256
impl Copy for __m256bh
impl Copy for __m256d
impl Copy for __m256h
impl Copy for __m256i
impl Copy for __m512
impl Copy for __m512bh
impl Copy for __m512d
impl Copy for __m512h
impl Copy for __m512i
impl Copy for bf16
impl Copy for TryFromSliceError
impl Copy for CharTryFromError
impl Copy for TryFromCharError
impl Copy for wasmtime_environ::__core::fmt::Error
impl Copy for Assume
impl Copy for Ipv4Addr
impl Copy for Ipv6Addr
impl Copy for SocketAddrV4
impl Copy for SocketAddrV6
impl Copy for TryFromIntError
impl Copy for wasmtime_environ::__core::ptr::Alignment
impl Copy for RangeFull
impl Copy for Utf8Error
impl Copy for RawWakerVTable
impl Copy for Duration
impl Copy for alloc::alloc::Global
impl Copy for System
impl Copy for FileTimes
impl Copy for FileType
impl Copy for Empty
impl Copy for Sink
impl Copy for UCred
impl Copy for ExitCode
impl Copy for ExitStatus
impl Copy for ExitStatusError
impl Copy for DefaultRandomSource
impl Copy for WaitTimeoutResult
impl Copy for RecvError
impl Copy for AccessError
impl Copy for ThreadId
impl Copy for Instant
impl Copy for SystemTime
impl Copy for IgnoredAny
impl Copy for PhantomPinned
impl Copy for AArch64
impl Copy for Aarch64Architecture
impl Copy for AbbreviationsCacheStrategy
impl Copy for AbstractHeapType
impl Copy for AbstractHeapType
impl Copy for Address
impl Copy for AddressSize
impl Copy for AliasableResourceId
impl Copy for AnonObjectHeader
impl Copy for AnonObjectHeaderBigobj
impl Copy for AnonObjectHeaderV2
impl Copy for AnyTypeId
impl Copy for Architecture
impl Copy for Architecture
impl Copy for Arm
impl Copy for ArmArchitecture
impl Copy for ArrayType
impl Copy for ArrayType
impl Copy for AttributeSpecification
impl Copy for Augmentation
impl Copy for AuxHeader32
impl Copy for AuxHeader64
impl Copy for BigEndian
impl Copy for BigEndian
impl Copy for BinaryFormat
impl Copy for BinaryFormat
impl Copy for BlockAux32
impl Copy for BlockAux64
impl Copy for BlockType
impl Copy for BlockType
impl Copy for BranchHint
impl Copy for BranchHint
impl Copy for CDataModel
impl Copy for CallingConvention
impl Copy for CanonicalOption
impl Copy for CanonicalOption
impl Copy for Catch
impl Copy for CieId
impl Copy for Class
impl Copy for CoffExportStyle
impl Copy for Color
impl Copy for ColorChoice
impl Copy for ColumnType
impl Copy for ComdatId
impl Copy for ComdatKind
impl Copy for ComdatSymbol
impl Copy for ComdatSymbolKind
impl Copy for ComponentAnyTypeId
impl Copy for ComponentCoreInstanceTypeId
impl Copy for ComponentCoreModuleTypeId
impl Copy for ComponentCoreTypeId
impl Copy for ComponentDefinedTypeId
impl Copy for ComponentEntityType
impl Copy for ComponentExportKind
impl Copy for ComponentExternalKind
impl Copy for ComponentFuncTypeId
impl Copy for ComponentInstanceTypeId
impl Copy for ComponentOuterAliasKind
impl Copy for ComponentOuterAliasKind
impl Copy for ComponentSectionId
impl Copy for ComponentTypeId
impl Copy for ComponentTypeRef
impl Copy for ComponentTypeRef
impl Copy for ComponentValType
impl Copy for ComponentValType
impl Copy for ComponentValType
impl Copy for ComponentValueTypeId
impl Copy for CompressedFileRange
impl Copy for CompressionFormat
impl Copy for ContType
impl Copy for ConvertError
impl Copy for CoreTypeId
impl Copy for CsectAux32
impl Copy for CsectAux64
impl Copy for DataCountSection
impl Copy for DebugTypeSignature
impl Copy for DefinedDataSymbol
impl Copy for DemangleNodeType
impl Copy for DemangleOptions
impl Copy for DirectoryId
impl Copy for DiscriminantSize
impl Copy for DwAccess
impl Copy for DwAddr
impl Copy for DwAt
impl Copy for DwAte
impl Copy for DwCc
impl Copy for DwCfa
impl Copy for DwChildren
impl Copy for DwDefaulted
impl Copy for DwDs
impl Copy for DwDsc
impl Copy for DwEhPe
impl Copy for DwEnd
impl Copy for DwForm
impl Copy for DwId
impl Copy for DwIdx
impl Copy for DwInl
impl Copy for DwLang
impl Copy for DwLle
impl Copy for DwLnct
impl Copy for DwLne
impl Copy for DwLns
impl Copy for DwMacro
impl Copy for DwOp
impl Copy for DwOrd
impl Copy for DwRle
impl Copy for DwSect
impl Copy for DwSectV2
impl Copy for DwTag
impl Copy for DwUt
impl Copy for DwVirtuality
impl Copy for DwVis
impl Copy for DwarfAux32
impl Copy for DwarfAux64
impl Copy for DwarfFileType
impl Copy for DwoId
impl Copy for Encoding
impl Copy for Encoding
impl Copy for Endianness
impl Copy for Endianness
impl Copy for EntityType
impl Copy for EntityType
impl Copy for Environment
impl Copy for Error
impl Copy for Error
impl Copy for Error
impl Copy for Error
impl Copy for Error
impl Copy for ErrorKind
impl Copy for ExpAux
impl Copy for ExportKind
impl Copy for ExternalKind
impl Copy for FatArch32
impl Copy for FatArch64
impl Copy for FatHeader
impl Copy for FieldType
impl Copy for FieldType
impl Copy for FileAux32
impl Copy for FileAux64
impl Copy for FileEntryFormat
impl Copy for FileFlags
impl Copy for FileHeader32
impl Copy for FileHeader64
impl Copy for FileId
impl Copy for FileKind
impl Copy for Format
impl Copy for Frame
impl Copy for FrameKind
impl Copy for FunAux32
impl Copy for FunAux64
impl Copy for GlobalType
impl Copy for GlobalType
impl Copy for Guid
impl Copy for Handle
impl Copy for HeapType
impl Copy for HeapType
impl Copy for Ident
impl Copy for Ieee32
impl Copy for Ieee64
impl Copy for ImageAlpha64RuntimeFunctionEntry
impl Copy for ImageAlphaRuntimeFunctionEntry
impl Copy for ImageArchitectureEntry
impl Copy for ImageArchiveMemberHeader
impl Copy for ImageArm64RuntimeFunctionEntry
impl Copy for ImageArmRuntimeFunctionEntry
impl Copy for ImageAuxSymbolCrc
impl Copy for ImageAuxSymbolFunction
impl Copy for ImageAuxSymbolFunctionBeginEnd
impl Copy for ImageAuxSymbolSection
impl Copy for ImageAuxSymbolTokenDef
impl Copy for ImageAuxSymbolWeak
impl Copy for ImageBaseRelocation
impl Copy for ImageBoundForwarderRef
impl Copy for ImageBoundImportDescriptor
impl Copy for ImageCoffSymbolsHeader
impl Copy for ImageCor20Header
impl Copy for ImageDataDirectory
impl Copy for ImageDebugDirectory
impl Copy for ImageDebugMisc
impl Copy for ImageDelayloadDescriptor
impl Copy for ImageDosHeader
impl Copy for ImageDynamicRelocation32
impl Copy for ImageDynamicRelocation64
impl Copy for ImageDynamicRelocation32V2
impl Copy for ImageDynamicRelocation64V2
impl Copy for ImageDynamicRelocationTable
impl Copy for ImageEnclaveConfig32
impl Copy for ImageEnclaveConfig64
impl Copy for ImageEnclaveImport
impl Copy for ImageEpilogueDynamicRelocationHeader
impl Copy for ImageExportDirectory
impl Copy for ImageFileHeader
impl Copy for ImageFunctionEntry
impl Copy for ImageFunctionEntry64
impl Copy for ImageHotPatchBase
impl Copy for ImageHotPatchHashes
impl Copy for ImageHotPatchInfo
impl Copy for ImageImportByName
impl Copy for ImageImportDescriptor
impl Copy for ImageLinenumber
impl Copy for ImageLoadConfigCodeIntegrity
impl Copy for ImageLoadConfigDirectory32
impl Copy for ImageLoadConfigDirectory64
impl Copy for ImageNtHeaders32
impl Copy for ImageNtHeaders64
impl Copy for ImageOptionalHeader32
impl Copy for ImageOptionalHeader64
impl Copy for ImageOs2Header
impl Copy for ImagePrologueDynamicRelocationHeader
impl Copy for ImageRelocation
impl Copy for ImageResourceDataEntry
impl Copy for ImageResourceDirStringU
impl Copy for ImageResourceDirectory
impl Copy for ImageResourceDirectoryEntry
impl Copy for ImageResourceDirectoryString
impl Copy for ImageRomHeaders
impl Copy for ImageRomOptionalHeader
impl Copy for ImageRuntimeFunctionEntry
impl Copy for ImageSectionHeader
impl Copy for ImageSeparateDebugHeader
impl Copy for ImageSymbol
impl Copy for ImageSymbolBytes
impl Copy for ImageSymbolEx
impl Copy for ImageSymbolExBytes
impl Copy for ImageThunkData32
impl Copy for ImageThunkData64
impl Copy for ImageTlsDirectory32
impl Copy for ImageTlsDirectory64
impl Copy for ImageVxdHeader
impl Copy for ImportObjectHeader
impl Copy for ImportType
impl Copy for IndexSectionId
impl Copy for InitFunc
impl Copy for InitialLengthOffset
impl Copy for InstantiationArgKind
impl Copy for LineEncoding
impl Copy for LineRow
impl Copy for LineRow
impl Copy for LineStringId
impl Copy for LittleEndian
impl Copy for LittleEndian
impl Copy for LocationListId
impl Copy for LoongArch
impl Copy for MIPS
impl Copy for MachOBuildVersion
impl Copy for Mangling
impl Copy for MaskedRichHeaderEntry
impl Copy for MemArg
impl Copy for MemArg
impl Copy for MemInfo
impl Copy for MemoryType
impl Copy for MemoryType
impl Copy for Mips32Architecture
impl Copy for Mips64Architecture
impl Copy for ModuleArg
impl Copy for Name
impl Copy for NonPagedDebugInfo
impl Copy for ObjectKind
impl Copy for OperatingSystem
impl Copy for Ordering
impl Copy for Ordering
impl Copy for OuterAliasKind
impl Copy for PackedIndex
impl Copy for ParseOptions
impl Copy for Pointer
impl Copy for PointerWidth
impl Copy for PowerPc64
impl Copy for Prefilter
impl Copy for PrimitiveValType
impl Copy for PrimitiveValType
impl Copy for Range
impl Copy for RangeListId
impl Copy for ReaderOffsetId
impl Copy for RecGroupId
impl Copy for RefType
impl Copy for RefType
impl Copy for Reference
impl Copy for Register
impl Copy for Rel32
impl Copy for Rel64
impl Copy for RelocAddendKind
impl Copy for Relocation
impl Copy for Relocation
impl Copy for RelocationEncoding
impl Copy for RelocationEntry
impl Copy for RelocationFlags
impl Copy for RelocationInfo
impl Copy for RelocationKind
impl Copy for RelocationTarget
impl Copy for RelocationTarget
impl Copy for RelocationType
impl Copy for ResourceId
impl Copy for ResourceName
impl Copy for RichHeaderEntry
impl Copy for RiscV
impl Copy for Riscv32Architecture
impl Copy for Riscv64Architecture
impl Copy for RunTimeEndian
impl Copy for ScatteredRelocationInfo
impl Copy for SectionFlags
impl Copy for SectionHeader32
impl Copy for SectionHeader64
impl Copy for SectionId
impl Copy for SectionId
impl Copy for SectionId
impl Copy for SectionIndex
impl Copy for SectionIndex
impl Copy for SectionKind
impl Copy for SectionRange
impl Copy for SeekFrom
impl Copy for SegmentFlags
impl Copy for SegmentFlags
impl Copy for Size
impl Copy for StandardSection
impl Copy for StandardSegment
impl Copy for StartSection
impl Copy for StatAux
impl Copy for StorageType
impl Copy for StorageType
impl Copy for StoreOnHeap
impl Copy for StringId
impl Copy for StringId
impl Copy for SubArchitecture
impl Copy for Symbol32
impl Copy for Symbol64
impl Copy for SymbolBytes
impl Copy for SymbolFlags
impl Copy for SymbolId
impl Copy for SymbolIndex
impl Copy for SymbolIndex
impl Copy for SymbolKind
impl Copy for SymbolScope
impl Copy for SymbolSection
impl Copy for SymbolSection
impl Copy for TableType
impl Copy for TableType
impl Copy for TagKind
impl Copy for TagKind
impl Copy for TagType
impl Copy for TagType
impl Copy for TypeBounds
impl Copy for TypeBounds
impl Copy for TypeRef
impl Copy for UnitEntryId
impl Copy for UnitId
impl Copy for UnitIndexSection
impl Copy for UnpackedIndex
impl Copy for V128
impl Copy for ValType
impl Copy for ValType
impl Copy for ValidatorId
impl Copy for Value
impl Copy for ValueType
impl Copy for Vendor
impl Copy for VersionIndex
impl Copy for WasmFeatures
impl Copy for X86
impl Copy for X86_64
impl Copy for X86_32Architecture
impl<'a> Copy for Utf8Pattern<'a>
impl<'a> Copy for Component<'a>
impl<'a> Copy for Prefix<'a>
impl<'a> Copy for Unexpected<'a>
impl<'a> Copy for Arguments<'a>
impl<'a> Copy for wasmtime_environ::__core::panic::Location<'a>
impl<'a> Copy for IoSlice<'a>
impl<'a> Copy for Ancestors<'a>
impl<'a> Copy for PrefixComponent<'a>
impl<'a> Copy for Alias<'a>
impl<'a> Copy for ComponentExportName<'a>
impl<'a> Copy for ComponentImport<'a>
impl<'a> Copy for ComponentImportName<'a>
impl<'a> Copy for Export<'a>
impl<'a> Copy for Import<'a>
impl<'a> Copy for Naming<'a>
impl<'a> Copy for ProducersFieldValue<'a>
impl<'a> Copy for RawSection<'a>
impl<'a> Copy for Segment<'a>
impl<'a> Copy for SymbolInfo<'a>
impl<'a> Copy for TypesRef<'a>
impl<'a, E> Copy for BytesDeserializer<'a, E>
impl<'a, R> Copy for ReadCacheRange<'a, R>where
R: ReadCacheOps,
impl<'a, R> Copy for UnitRef<'a, R>where
R: Reader,
impl<'a, T> Copy for Ptr<'a, T>where
T: ?Sized,
impl<'a, T, const N: usize> Copy for ArrayWindows<'a, T, N>where
T: Copy + 'a,
impl<'abbrev, 'entry, 'unit, R> Copy for AttrsIter<'abbrev, 'entry, 'unit, R>where
R: Copy + Reader,
impl<'data> Copy for Bytes<'data>
impl<'data> Copy for CodeView<'data>
impl<'data> Copy for CompressedData<'data>
impl<'data> Copy for DataDirectories<'data>
impl<'data> Copy for Export<'data>
impl<'data> Copy for Export<'data>
impl<'data> Copy for ExportTarget<'data>
impl<'data> Copy for Import<'data>
impl<'data> Copy for Import<'data>
impl<'data> Copy for ImportName<'data>
impl<'data> Copy for ObjectMapEntry<'data>
impl<'data> Copy for ObjectMapFile<'data>
impl<'data> Copy for RelocationBlockIterator<'data>
impl<'data> Copy for ResourceDirectory<'data>
impl<'data> Copy for RichHeaderInfo<'data>
impl<'data> Copy for SectionTable<'data>
impl<'data> Copy for SymbolMapName<'data>
impl<'data> Copy for Version<'data>
impl<'data, 'file, Elf, R> Copy for ElfSymbol<'data, 'file, Elf, R>
impl<'data, 'file, Elf, R> Copy for ElfSymbolTable<'data, 'file, Elf, R>
impl<'data, 'file, Mach, R> Copy for MachOSymbol<'data, 'file, Mach, R>
impl<'data, 'file, Mach, R> Copy for MachOSymbolTable<'data, 'file, Mach, R>
impl<'data, 'file, R, Coff> Copy for CoffSymbol<'data, 'file, R, Coff>
impl<'data, 'file, R, Coff> Copy for CoffSymbolTable<'data, 'file, R, Coff>
impl<'data, 'file, Xcoff, R> Copy for XcoffSymbol<'data, 'file, Xcoff, R>
impl<'data, 'file, Xcoff, R> Copy for XcoffSymbolTable<'data, 'file, Xcoff, R>
impl<'data, E> Copy for DyldSubCacheSlice<'data, E>where
E: Copy + Endian,
impl<'data, E> Copy for LoadCommandData<'data, E>where
E: Copy + Endian,
impl<'data, E> Copy for LoadCommandIterator<'data, E>where
E: Copy + Endian,
impl<'data, E> Copy for LoadCommandVariant<'data, E>where
E: Copy + Endian,
impl<'data, Elf, R> Copy for SectionTable<'data, Elf, R>
impl<'data, Elf, R> Copy for SymbolTable<'data, Elf, R>
impl<'data, Mach, R> Copy for SymbolTable<'data, Mach, R>
impl<'data, R> Copy for StringTable<'data, R>where
R: Copy + ReadRef<'data>,
impl<'data, Xcoff> Copy for SectionTable<'data, Xcoff>
impl<'de, E> Copy for BorrowedBytesDeserializer<'de, E>
impl<'de, E> Copy for BorrowedStrDeserializer<'de, E>
impl<'de, E> Copy for StrDeserializer<'de, E>
impl<'fd> Copy for BorrowedFd<'fd>
impl<'input, Endian> Copy for EndianSlice<'input, Endian>where
Endian: Copy + Endianity,
impl<'prev, 'subs> Copy for ArgScopeStack<'prev, 'subs>where
'subs: 'prev,
impl<B, C> Copy for ControlFlow<B, C>
impl<Dyn> Copy for DynMetadata<Dyn>where
Dyn: ?Sized,
impl<E> Copy for BoolDeserializer<E>
impl<E> Copy for CharDeserializer<E>
impl<E> Copy for F32Deserializer<E>
impl<E> Copy for F64Deserializer<E>
impl<E> Copy for I8Deserializer<E>
impl<E> Copy for I16Deserializer<E>
impl<E> Copy for I32Deserializer<E>
impl<E> Copy for I64Deserializer<E>
impl<E> Copy for I128Deserializer<E>
impl<E> Copy for IsizeDeserializer<E>
impl<E> Copy for U8Deserializer<E>
impl<E> Copy for U16Deserializer<E>
impl<E> Copy for U32Deserializer<E>
impl<E> Copy for U64Deserializer<E>
impl<E> Copy for U128Deserializer<E>
impl<E> Copy for UnitDeserializer<E>
impl<E> Copy for UsizeDeserializer<E>
impl<E> Copy for BuildToolVersion<E>where
E: Copy + Endian,
impl<E> Copy for BuildVersionCommand<E>where
E: Copy + Endian,
impl<E> Copy for CompressionHeader32<E>where
E: Copy + Endian,
impl<E> Copy for CompressionHeader64<E>where
E: Copy + Endian,
impl<E> Copy for DataInCodeEntry<E>where
E: Copy + Endian,
impl<E> Copy for DyldCacheHeader<E>where
E: Copy + Endian,
impl<E> Copy for DyldCacheImageInfo<E>where
E: Copy + Endian,
impl<E> Copy for DyldCacheMappingInfo<E>where
E: Copy + Endian,
impl<E> Copy for DyldInfoCommand<E>where
E: Copy + Endian,
impl<E> Copy for DyldSubCacheEntryV1<E>where
E: Copy + Endian,
impl<E> Copy for DyldSubCacheEntryV2<E>where
E: Copy + Endian,
impl<E> Copy for Dylib<E>where
E: Copy + Endian,
impl<E> Copy for DylibCommand<E>where
E: Copy + Endian,
impl<E> Copy for DylibModule32<E>where
E: Copy + Endian,
impl<E> Copy for DylibModule64<E>where
E: Copy + Endian,
impl<E> Copy for DylibReference<E>where
E: Copy + Endian,
impl<E> Copy for DylibTableOfContents<E>where
E: Copy + Endian,
impl<E> Copy for DylinkerCommand<E>where
E: Copy + Endian,
impl<E> Copy for Dyn32<E>where
E: Copy + Endian,
impl<E> Copy for Dyn64<E>where
E: Copy + Endian,
impl<E> Copy for DysymtabCommand<E>where
E: Copy + Endian,
impl<E> Copy for EncryptionInfoCommand32<E>where
E: Copy + Endian,
impl<E> Copy for EncryptionInfoCommand64<E>where
E: Copy + Endian,
impl<E> Copy for EntryPointCommand<E>where
E: Copy + Endian,
impl<E> Copy for FileHeader32<E>where
E: Copy + Endian,
impl<E> Copy for FileHeader64<E>where
E: Copy + Endian,
impl<E> Copy for FilesetEntryCommand<E>where
E: Copy + Endian,
impl<E> Copy for FvmfileCommand<E>where
E: Copy + Endian,
impl<E> Copy for Fvmlib<E>where
E: Copy + Endian,
impl<E> Copy for FvmlibCommand<E>where
E: Copy + Endian,
impl<E> Copy for GnuHashHeader<E>where
E: Copy + Endian,
impl<E> Copy for HashHeader<E>where
E: Copy + Endian,
impl<E> Copy for I16<E>where
E: Copy + Endian,
impl<E> Copy for I16Bytes<E>where
E: Copy + Endian,
impl<E> Copy for I32<E>where
E: Copy + Endian,
impl<E> Copy for I32Bytes<E>where
E: Copy + Endian,
impl<E> Copy for I64<E>where
E: Copy + Endian,
impl<E> Copy for I64Bytes<E>where
E: Copy + Endian,
impl<E> Copy for IdentCommand<E>where
E: Copy + Endian,
impl<E> Copy for LcStr<E>where
E: Copy + Endian,
impl<E> Copy for LinkeditDataCommand<E>where
E: Copy + Endian,
impl<E> Copy for LinkerOptionCommand<E>where
E: Copy + Endian,
impl<E> Copy for LoadCommand<E>where
E: Copy + Endian,
impl<E> Copy for MachHeader32<E>where
E: Copy + Endian,
impl<E> Copy for MachHeader64<E>where
E: Copy + Endian,
impl<E> Copy for Nlist32<E>where
E: Copy + Endian,
impl<E> Copy for Nlist64<E>where
E: Copy + Endian,
impl<E> Copy for NoteCommand<E>where
E: Copy + Endian,
impl<E> Copy for NoteHeader32<E>where
E: Copy + Endian,
impl<E> Copy for NoteHeader64<E>where
E: Copy + Endian,
impl<E> Copy for PrebindCksumCommand<E>where
E: Copy + Endian,
impl<E> Copy for PreboundDylibCommand<E>where
E: Copy + Endian,
impl<E> Copy for ProgramHeader32<E>where
E: Copy + Endian,
impl<E> Copy for ProgramHeader64<E>where
E: Copy + Endian,
impl<E> Copy for ReadExactError<E>where
E: Copy,
impl<E> Copy for Rel32<E>where
E: Copy + Endian,
impl<E> Copy for Rel64<E>where
E: Copy + Endian,
impl<E> Copy for Rela32<E>where
E: Copy + Endian,
impl<E> Copy for Rela64<E>where
E: Copy + Endian,
impl<E> Copy for Relocation<E>where
E: Copy + Endian,
impl<E> Copy for RoutinesCommand32<E>where
E: Copy + Endian,
impl<E> Copy for RoutinesCommand64<E>where
E: Copy + Endian,
impl<E> Copy for RpathCommand<E>where
E: Copy + Endian,
impl<E> Copy for Section32<E>where
E: Copy + Endian,
impl<E> Copy for Section64<E>where
E: Copy + Endian,
impl<E> Copy for SectionHeader32<E>where
E: Copy + Endian,
impl<E> Copy for SectionHeader64<E>where
E: Copy + Endian,
impl<E> Copy for SegmentCommand32<E>where
E: Copy + Endian,
impl<E> Copy for SegmentCommand64<E>where
E: Copy + Endian,
impl<E> Copy for SourceVersionCommand<E>where
E: Copy + Endian,
impl<E> Copy for SubClientCommand<E>where
E: Copy + Endian,
impl<E> Copy for SubFrameworkCommand<E>where
E: Copy + Endian,
impl<E> Copy for SubLibraryCommand<E>where
E: Copy + Endian,
impl<E> Copy for SubUmbrellaCommand<E>where
E: Copy + Endian,
impl<E> Copy for Sym32<E>where
E: Copy + Endian,
impl<E> Copy for Sym64<E>where
E: Copy + Endian,
impl<E> Copy for Syminfo32<E>where
E: Copy + Endian,
impl<E> Copy for Syminfo64<E>where
E: Copy + Endian,
impl<E> Copy for SymsegCommand<E>where
E: Copy + Endian,
impl<E> Copy for SymtabCommand<E>where
E: Copy + Endian,
impl<E> Copy for ThreadCommand<E>where
E: Copy + Endian,
impl<E> Copy for TwolevelHint<E>where
E: Copy + Endian,
impl<E> Copy for TwolevelHintsCommand<E>where
E: Copy + Endian,
impl<E> Copy for U16<E>where
E: Copy + Endian,
impl<E> Copy for U16Bytes<E>where
E: Copy + Endian,
impl<E> Copy for U32<E>where
E: Copy + Endian,
impl<E> Copy for U32Bytes<E>where
E: Copy + Endian,
impl<E> Copy for U64<E>where
E: Copy + Endian,
impl<E> Copy for U64Bytes<E>where
E: Copy + Endian,
impl<E> Copy for UuidCommand<E>where
E: Copy + Endian,
impl<E> Copy for Verdaux<E>where
E: Copy + Endian,
impl<E> Copy for Verdef<E>where
E: Copy + Endian,
impl<E> Copy for Vernaux<E>where
E: Copy + Endian,
impl<E> Copy for Verneed<E>where
E: Copy + Endian,
impl<E> Copy for VersionMinCommand<E>where
E: Copy + Endian,
impl<E> Copy for Versym<E>where
E: Copy + Endian,
impl<E> Copy for WriteFmtError<E>where
E: Copy,
impl<F> Copy for RepeatWith<F>where
F: Copy,
impl<Idx> Copy for wasmtime_environ::__core::range::Range<Idx>where
Idx: Copy,
impl<Idx> Copy for RangeFrom<Idx>where
Idx: Copy,
impl<Idx> Copy for RangeInclusive<Idx>where
Idx: Copy,
impl<Idx> Copy for RangeTo<Idx>where
Idx: Copy,
impl<Idx> Copy for RangeToInclusive<Idx>where
Idx: Copy,
impl<Offset> Copy for UnitType<Offset>where
Offset: Copy + ReaderOffset,
impl<P: Copy> Copy for VMComponentOffsets<P>
impl<P: Copy> Copy for VMOffsets<P>
impl<P: Copy> Copy for VMOffsetsFields<P>
impl<Ptr> Copy for Pin<Ptr>where
Ptr: Copy,
impl<R> Copy for Attribute<R>where
R: Copy + Reader,
impl<R> Copy for DebugAbbrev<R>where
R: Copy,
impl<R> Copy for DebugAddr<R>where
R: Copy,
impl<R> Copy for DebugAranges<R>where
R: Copy,
impl<R> Copy for DebugCuIndex<R>where
R: Copy,
impl<R> Copy for DebugFrame<R>where
R: Copy + Reader,
impl<R> Copy for DebugInfo<R>where
R: Copy,
impl<R> Copy for DebugLine<R>where
R: Copy,
impl<R> Copy for DebugLineStr<R>where
R: Copy,
impl<R> Copy for DebugLoc<R>where
R: Copy,
impl<R> Copy for DebugLocLists<R>where
R: Copy,
impl<R> Copy for DebugRanges<R>where
R: Copy,
impl<R> Copy for DebugRngLists<R>where
R: Copy,
impl<R> Copy for DebugStr<R>where
R: Copy,
impl<R> Copy for DebugStrOffsets<R>where
R: Copy,
impl<R> Copy for DebugTuIndex<R>where
R: Copy,
impl<R> Copy for DebugTypes<R>where
R: Copy,
impl<R> Copy for EhFrame<R>where
R: Copy + Reader,
impl<R> Copy for EhFrameHdr<R>where
R: Copy + Reader,
impl<R> Copy for Expression<R>where
R: Copy + Reader,
impl<R> Copy for LocationListEntry<R>where
R: Copy + Reader,
impl<R> Copy for LocationLists<R>where
R: Copy,
impl<R> Copy for OperationIter<R>where
R: Copy + Reader,
impl<R> Copy for RangeLists<R>where
R: Copy,
impl<R, Offset> Copy for AttributeValue<R, Offset>
impl<R, Offset> Copy for FileEntry<R, Offset>
impl<R, Offset> Copy for LineInstruction<R, Offset>
impl<R, Offset> Copy for Location<R, Offset>
impl<R, Offset> Copy for Operation<R, Offset>
impl<R, Offset> Copy for Piece<R, Offset>
impl<R, Offset> Copy for UnitHeader<R, Offset>
impl<Section, Symbol> Copy for SymbolFlags<Section, Symbol>
impl<T> Copy for Option<T>where
T: Copy,
impl<T> Copy for Bound<T>where
T: Copy,
impl<T> Copy for Poll<T>where
T: Copy,
impl<T> Copy for SendTimeoutError<T>where
T: Copy,
impl<T> Copy for TrySendError<T>where
T: Copy,
impl<T> Copy for *const Twhere
T: ?Sized,
impl<T> Copy for *mut Twhere
T: ?Sized,
impl<T> Copy for &Twhere
T: ?Sized,
Shared references can be copied, but mutable references cannot!